Abstract High-spin states in 178Ir were investigated by means of in-beam
-ray spectroscopy techniques using the multidetector array GASP. Excited states of 178Ir were
populated through the 159Tb(24Mg, 5n) fusion-evaporation reaction at
MeV.
Several rotational bands were observed. Among them, the
structure has been identified
up to spin 36 . This band exhibits
an anomalous signature splitting and a signature inversion around spin 25 .